Raid 6 Expansion Guidance, Please

Good Day one and all,

I am new to MSA's so please forgive me. I have an MSA1000 that is partitioned off into several LUNs and some Unused space. I need to expand one of my Raid 6 LUNs. I have not done this before. Can you please direct me to where I can TRFM?

I saw the expand wizard in the ACL. My question is about how long it will take to add an additional 180609MB to a LUN?